Springwork.



w. SHANNON.-

SPRINGWOBK. APPLICATION FILED AUG. 2, 1907.

Patented July 27, 1909.

UTTE STAlEti rares rare.

WOODFORD SHANNON, OF LOUISVILLE, KENTUCKY.

SPRINGWORK.

To all whom it may concern:

Be it known that I, Voonronn SHANNON, a citizen of the United States,residing at Louisville, in the county of Jefferson, in the State ofKentucky, have invented certain new and useful Improvements inSpringwork, of which the following is a specification.

This invention relates to spring work for bed bottoms, chair bottoms,couches and the like, and particularly to that type of spring workemploying a pair of metallic members arranged at angles to each other,one of said members bearing upon one side of a ring of a coil spring andthe other or key-member bearing on the other side of the ring, betweensaid ring and the first member.

It has for an object to provide on the keymember a crank member of suchform, that when turned, its longitudinal axis will be to one side of thelongitudinal axis of the key member, whereby the longitudinal axis ofthe key member lies nearly in the plane of one face of the ring of thespring, and greatest pressure is placed upon the other member instead ofthe ring of the spiral, thus materially lessening the distortion of thelatter.

Other and further objects will appear in the following description andwill be more particularly pointed out in the appended claims.

In the drawings, Figure 1 is a perspective view of two springs securedby my invention. Fig. 2 is a sectional view showing the key member inelevation. Fig. 3 is a sectional view at right angles to Fig. 2 showingthe other member in plan. Figs. 4 and 5 are detail plan views of the twomembers.

Referring more particularly to the drawings, 1 indicates a cone spiralspring having the usual lower ring 2, and 3 indicates a member madepreferably of wire and bent to provide on one side, large recessedportions 4 having an inner seat 5. Opposite points of one face of thering 2, preferably the lower one, bear on the member 3 on opposite sidesof the recessed portion 4, which in turn projects through the ring tothe opposite side.

The members 3 are placed in the usual guides of the bed bottom or thelike in such a manner that the portions 4 stand with their apexesuppermost. The spiral springs 1 are then placed in position so that thesmall ends of the spirals are over the por- Specification of LettersPatent.

Application filed August 2, 1907.

Patented July 27, 1909.

Serial No. 386,811.

tions 1. A key member 6 is then inserted over the lower ring 2 andui'iderneath the portions at until the crank men'zbers 7 are directlyunderneath the portions 4- but lying in a plane horizontal to the planeof the lower rings 2, as shown in dotted lines in Fig. 3. The keymembers 6 with the crank members 7 are then turned until the crankmembers stand vertical to the plane of the lower rings 2. The height ofthe crank members is so proportioned that it is greater than thedistance between the top of the lower rings 2 and the under side of theportions 4 and the turning of the crank members into vertical positionwill therefore cause the crank members to bind underneath the portions 4thereby producing a very rigid connection between the three mem hers 1,3 and 6. Each of the crank members is so formed that its longitudinalaxis aa, Fig. 2, is on one side of the longitudinal axis b?) of the keymember. Upon the rotation of the key member until the parts assume theposition shown in Fig. 1, pressure is exerted more on the first orrecessed members than the spirals, and the lower rings of the spiralsare but slightly distorted although they are clamped tightly between thetwo members. The outer portion of each crank member is bent or recessedat 8 to provide a seat to receive the first member 3 and prevent thelateral movement of the first member while the seat 5 of the firstmember 3 prevents the lateral displacement or turning of the key member6.

On the side of the key member 6 opposite the crank 7 are formedshoulders 9 which prevent relative slidin between the key member and thespirals, relative sliding between the spirals and the first member beingprevented by the rings 2 engaging the opposite sides of the recessedportions 4. To further hold the parts against movement, both members aresecured at their ends to the frame of the article to which the springwork is applied.

- 'Having thus described my invention, what I claim and desire to secureby Letters Patent is 1. The combination with the spiral spring, of amember bearing at two opposite points on the face of a ring of thespring, said member having a recessed portion projecting through saidring and provided with an inner seat, and a key member having a crankportion fitted between the opposite face of the ring and the firstmember and resting in the seat of the recessed portion of said firstmember.

2. The combination with the spiral spring, of a member hearing at twoopposite points on one face of a ring of the spring and provided with arecessed portion projecting upwardly through the ring, and a key memberprojecting through, the spring above said ring and having a crank memberbearing on the ring and the recessed portion of the first-named member,said crank member having the greater portion of its length located abovethe key member. s

3. The combination with the spiral spring having a ring at its lowersmaller end; of a recessed member upon which the ring portion of saidspiral soring bears upon each side of the reeessed portion of saidrecessed member; and a he) member extending through the spring above thering portion, said key member being provided with a cranked portion ofgreater length than the recessed portion of said recessed member andadapted to form a self-retaining wedge between said recessed member andthe ring portion of the spring.

4. The combination with a spiral spring having a ring at its lower end;of a member having a crimped portion the under side of which forms arecess, said recess being pro Vided with a seat; and a key member havinga crank portion or member provided with a seat on the upper sidethereof, which seat co-acts with the seat in the recess formed by theunder sine of the crimped portion of the first member, the seats of bothof said members lying in a common plane outside the plane of the nearestface of the ring on said sprin The foregoing specification signed atLouisville, Ky, this St h day of March, 1907.

lVOODFOR-D SHANNON In presence of two witnesses:

J. H. DICKEY, ADOLPH Amnnms'r.

